-91.62% is the change from 847 to 71
Calculation steps:
[( 71 - 847 ) ÷ 847] x 100 = -91.62%
Formula
Percentage change = [(71 - 847) / 847] x 100
Subtract the new number by the original number
71 - 847 = -776
-776 ÷ 847 = -0.9161747343565525
-0.9161747343565525 x 100 = -91.62%