-24.26% is the change from 816 to 618
Calculation steps:
[( 618 - 816 ) ÷ 816] x 100 = -24.26%
Formula
Percentage change = [(618 - 816) / 816] x 100
Subtract the new number by the original number
618 - 816 = -198
-198 ÷ 816 = -0.2426470588235294
-0.2426470588235294 x 100 = -24.26%