-89.19% is the change from 657 to 71
Calculation steps:
[( 71 - 657 ) ÷ 657] x 100 = -89.19%
Formula
Percentage change = [(71 - 657) / 657] x 100
Subtract the new number by the original number
71 - 657 = -586
-586 ÷ 657 = -0.8919330289193302
-0.8919330289193302 x 100 = -89.19%