-91.57% is the change from 842 to 71
Calculation steps:
[( 71 - 842 ) ÷ 842] x 100 = -91.57%
Formula
Percentage change = [(71 - 842) / 842] x 100
Subtract the new number by the original number
71 - 842 = -771
-771 ÷ 842 = -0.9156769596199525
-0.9156769596199525 x 100 = -91.57%