-91.96% is the change from 871 to 70
Calculation steps:
[( 70 - 871 ) ÷ 871] x 100 = -91.96%
Formula
Percentage change = [(70 - 871) / 871] x 100
Subtract the new number by the original number
70 - 871 = -801
-801 ÷ 871 = -0.9196326061997704
-0.9196326061997704 x 100 = -91.96%