-72.12% is the change from 850 to 237
Calculation steps:
[( 237 - 850 ) ÷ 850] x 100 = -72.12%
Formula
Percentage change = [(237 - 850) / 850] x 100
Subtract the new number by the original number
237 - 850 = -613
-613 ÷ 850 = -0.7211764705882353
-0.7211764705882353 x 100 = -72.12%