-71.57% is the change from 517 to 147
Calculation steps:
[( 147 - 517 ) ÷ 517] x 100 = -71.57%
Formula
Percentage change = [(147 - 517) / 517] x 100
Subtract the new number by the original number
147 - 517 = -370
-370 ÷ 517 = -0.7156673114119922
-0.7156673114119922 x 100 = -71.57%