15.18% is the change from 191 to 220
Calculation steps:
[( 220 - 191 ) ÷ 191] x 100 = 15.18%
Formula
Percentage change = [(220 - 191) / 191] x 100
Subtract the new number by the original number
220 - 191 = 29
29 ÷ 191 = 0.1518324607329843
0.1518324607329843 x 100 = 15.18%