-23.7% is the change from 810 to 618
Calculation steps:
[( 618 - 810 ) ÷ 810] x 100 = -23.7%
Formula
Percentage change = [(618 - 810) / 810] x 100
Subtract the new number by the original number
618 - 810 = -192
-192 ÷ 810 = -0.23703703703703705
-0.23703703703703705 x 100 = -23.7%