-15.7% is the change from 172 to 145
Calculation steps:
[( 145 - 172 ) ÷ 172] x 100 = -15.7%
Formula
Percentage change = [(145 - 172) / 172] x 100
Subtract the new number by the original number
145 - 172 = -27
-27 ÷ 172 = -0.1569767441860465
-0.1569767441860465 x 100 = -15.7%