-91.73% is the change from 859 to 71
Calculation steps:
[( 71 - 859 ) ÷ 859] x 100 = -91.73%
Formula
Percentage change = [(71 - 859) / 859] x 100
Subtract the new number by the original number
71 - 859 = -788
-788 ÷ 859 = -0.9173457508731082
-0.9173457508731082 x 100 = -91.73%