20.51% is the change from 156 to 188
Calculation steps:
[( 188 - 156 ) ÷ 156] x 100 = 20.51%
Formula
Percentage change = [(188 - 156) / 156] x 100
Subtract the new number by the original number
188 - 156 = 32
32 ÷ 156 = 0.20512820512820512
0.20512820512820512 x 100 = 20.51%