-25% is the change from 824 to 618
Calculation steps:
[( 618 - 824 ) ÷ 824] x 100 = -25%
Formula
Percentage change = [(618 - 824) / 824] x 100
Subtract the new number by the original number
618 - 824 = -206
-206 ÷ 824 = -0.25
-0.25 x 100 = -25%
Example