-93.76% is the change from 850 to 53
Calculation steps:
[( 53 - 850 ) ÷ 850] x 100 = -93.76%
Formula
Percentage change = [(53 - 850) / 850] x 100
Subtract the new number by the original number
53 - 850 = -797
-797 ÷ 850 = -0.9376470588235294
-0.9376470588235294 x 100 = -93.76%