\(g = {442 \over 410} ≈ 1{,}078 \text{.}\)

Op 1 januari 2026 is de hoeveelheid \(414 ⋅ 1{,}078 ≈ 446 \text{.}\)

Op 1 januari 2024 is de hoeveelheid \({414 \over 1{,}078} ≈ 384 \text{.}\)

Bij de veranderingen horen de groeifactoren
\(g_{1} = (100\% - 1{,}1\%) : 100\% = 0{,}989\)
en
\(g_{2} = (100\% + 1{,}3\%) : 100\% = 1{,}013 \text{.}\)

De totale groeifactor is dan
\(g_{\text{totaal}} = g_{1} ⋅ g_{2} = 0{,}989 ⋅ 1{,}013 = 1{,}001...\)

De totale toename is
\((1{,}001... ⋅ 100\%) - 100\% = 0{,}2\% \text{.}\)

Bij de veranderingen horen de groeifactoren
\(g_{1} = (100\% + 1{,}3\%) : 100\% = 1{,}013\)
en
\(g_{2} = (100\% - 2{,}8\%) : 100\% = 0{,}972 \text{.}\)

De totale groeifactor is dan
\(g_{\text{totaal}} = 1{,}013^{5} ⋅ 0{,}972^{2} = 1{,}007...\)

De totale toename is
\((1{,}007... ⋅ 100\%) - 100\% = 0{,}8\% \text{.}\)

\(g = 1 \text{.}\)

De procentuele toename is
\(1 ⋅ 100\% - 100\% = 0\% \text{.}\)

Bij de verandering hoort de groeifactor
\(g = (100\% - 3{,}2\%) : 100\% = 0{,}968 \text{.}\)

De totale groeifactor is dan
\(g_{\text{totaal}} = 0{,}968^{3} = 0{,}907...\)

De totale toename is
\((0{,}907... ⋅ 100\%) - 100\% = -9{,}3\% \text{,}\) ofwel een afname van \(9{,}3\% \text{.}\)