-21.57% is the change from 788 to 618
Calculation steps:
[( 618 - 788 ) ÷ 788] x 100 = -21.57%
Formula
Percentage change = [(618 - 788) / 788] x 100
Subtract the new number by the original number
618 - 788 = -170
-170 ÷ 788 = -0.21573604060913706
-0.21573604060913706 x 100 = -21.57%