-32.9% is the change from 921 to 618
Calculation steps:
[( 618 - 921 ) ÷ 921] x 100 = -32.9%
Formula
Percentage change = [(618 - 921) / 921] x 100
Subtract the new number by the original number
618 - 921 = -303
-303 ÷ 921 = -0.3289902280130293
-0.3289902280130293 x 100 = -32.9%