84.17% is the change from 120 to 221
Calculation steps:
[( 221 - 120 ) ÷ 120] x 100 = 84.17%
Formula
Percentage change = [(221 - 120) / 120] x 100
Subtract the new number by the original number
221 - 120 = 101
101 ÷ 120 = 0.8416666666666667
0.8416666666666667 x 100 = 84.17%