-66.5% is the change from 818 to 274
Calculation steps:
[( 274 - 818 ) ÷ 818] x 100 = -66.5%
Formula
Percentage change = [(274 - 818) / 818] x 100
Subtract the new number by the original number
274 - 818 = -544
-544 ÷ 818 = -0.6650366748166259
-0.6650366748166259 x 100 = -66.5%