-71.95% is the change from 517 to 145
Calculation steps:
[( 145 - 517 ) ÷ 517] x 100 = -71.95%
Formula
Percentage change = [(145 - 517) / 517] x 100
Subtract the new number by the original number
145 - 517 = -372
-372 ÷ 517 = -0.7195357833655706
-0.7195357833655706 x 100 = -71.95%