18.64% is the change from 220 to 261
Calculation steps:
[( 261 - 220 ) ÷ 220] x 100 = 18.64%
Formula
Percentage change = [(261 - 220) / 220] x 100
Subtract the new number by the original number
261 - 220 = 41
41 ÷ 220 = 0.18636363636363637
0.18636363636363637 x 100 = 18.64%