-69.8% is the change from 818 to 247
Calculation steps:
[( 247 - 818 ) ÷ 818] x 100 = -69.8%
Formula
Percentage change = [(247 - 818) / 818] x 100
Subtract the new number by the original number
247 - 818 = -571
-571 ÷ 818 = -0.6980440097799511
-0.6980440097799511 x 100 = -69.8%