31.15% is the change from 61 to 80
Calculation steps:
[( 80 - 61 ) ÷ 61] x 100 = 31.15%
Formula
Percentage change = [(80 - 61) / 61] x 100
Subtract the new number by the original number
80 - 61 = 19
19 ÷ 61 = 0.3114754098360656
0.3114754098360656 x 100 = 31.15%