-91.52% is the change from 837 to 71
Calculation steps:
[( 71 - 837 ) ÷ 837] x 100 = -91.52%
Formula
Percentage change = [(71 - 837) / 837] x 100
Subtract the new number by the original number
71 - 837 = -766
-766 ÷ 837 = -0.9151732377538829
-0.9151732377538829 x 100 = -91.52%