32.35% is the change from 170 to 225
Calculation steps:
[( 225 - 170 ) ÷ 170] x 100 = 32.35%
Formula
Percentage change = [(225 - 170) / 170] x 100
Subtract the new number by the original number
225 - 170 = 55
55 ÷ 170 = 0.3235294117647059
0.3235294117647059 x 100 = 32.35%