-91.64% is the change from 849 to 71
Calculation steps:
[( 71 - 849 ) ÷ 849] x 100 = -91.64%
Formula
Percentage change = [(71 - 849) / 849] x 100
Subtract the new number by the original number
71 - 849 = -778
-778 ÷ 849 = -0.9163722025912838
-0.9163722025912838 x 100 = -91.64%