-87.97% is the change from 590 to 71
Calculation steps:
[( 71 - 590 ) ÷ 590] x 100 = -87.97%
Formula
Percentage change = [(71 - 590) / 590] x 100
Subtract the new number by the original number
71 - 590 = -519
-519 ÷ 590 = -0.8796610169491526
-0.8796610169491526 x 100 = -87.97%