16.4% is the change from 189 to 220
Calculation steps:
[( 220 - 189 ) ÷ 189] x 100 = 16.4%
Formula
Percentage change = [(220 - 189) / 189] x 100
Subtract the new number by the original number
220 - 189 = 31
31 ÷ 189 = 0.164021164021164
0.164021164021164 x 100 = 16.4%