-78.24% is the change from 818 to 178
Calculation steps:
[( 178 - 818 ) ÷ 818] x 100 = -78.24%
Formula
Percentage change = [(178 - 818) / 818] x 100
Subtract the new number by the original number
178 - 818 = -640
-640 ÷ 818 = -0.78239608801956
-0.78239608801956 x 100 = -78.24%