-90.01% is the change from 711 to 71
Calculation steps:
[( 71 - 711 ) ÷ 711] x 100 = -90.01%
Formula
Percentage change = [(71 - 711) / 711] x 100
Subtract the new number by the original number
71 - 711 = -640
-640 ÷ 711 = -0.90014064697609
-0.90014064697609 x 100 = -90.01%