\(g = {260 \over 213} ≈ 1{,}221 \text{.}\)

Op 1 januari 2025 is de hoeveelheid \(109 ⋅ 1{,}221 ≈ 133 \text{.}\)

Op 1 januari 2023 is de hoeveelheid \({109 \over 1{,}221} ≈ 89 \text{.}\)

Bij de veranderingen horen de groeifactoren
\(g_{1} = (100\% + 3{,}8\%) : 100\% = 1{,}038\)
en
\(g_{2} = (100\% - 2{,}3\%) : 100\% = 0{,}977 \text{.}\)

De totale groeifactor is dan
\(g_{\text{totaal}} = g_{1} ⋅ g_{2} = 1{,}038 ⋅ 0{,}977 = 1{,}014...\)

De totale toename is
\((1{,}014... ⋅ 100\%) - 100\% = 1{,}4\% \text{.}\)

Bij de veranderingen horen de groeifactoren
\(g_{1} = (100\% + 2{,}2\%) : 100\% = 1{,}022\)
en
\(g_{2} = (100\% - 3{,}1\%) : 100\% = 0{,}969 \text{.}\)

De totale groeifactor is dan
\(g_{\text{totaal}} = 1{,}022^{3} ⋅ 0{,}969^{2} = 1{,}002...\)

De totale toename is
\((1{,}002... ⋅ 100\%) - 100\% = 0{,}2\% \text{.}\)

\(g = 7 \text{.}\)

De procentuele toename is
\(7 ⋅ 100\% - 100\% = 600\% \text{.}\)

Bij de verandering hoort de groeifactor
\(g = (100\% - 1{,}3\%) : 100\% = 0{,}987 \text{.}\)

De totale groeifactor is dan
\(g_{\text{totaal}} = 0{,}987^{4} = 0{,}949...\)

De totale toename is
\((0{,}949... ⋅ 100\%) - 100\% = -5{,}1\% \text{,}\) ofwel een afname van \(5{,}1\% \text{.}\)