-20.35% is the change from 172 to 137
Calculation steps:
[( 137 - 172 ) ÷ 172] x 100 = -20.35%
Formula
Percentage change = [(137 - 172) / 172] x 100
Subtract the new number by the original number
137 - 172 = -35
-35 ÷ 172 = -0.20348837209302326
-0.20348837209302326 x 100 = -20.35%