-93.77% is the change from 818 to 51
Calculation steps:
[( 51 - 818 ) ÷ 818] x 100 = -93.77%
Formula
Percentage change = [(51 - 818) / 818] x 100
Subtract the new number by the original number
51 - 818 = -767
-767 ÷ 818 = -0.9376528117359413
-0.9376528117359413 x 100 = -93.77%