-77.22% is the change from 663 to 151
Calculation steps:
[( 151 - 663 ) ÷ 663] x 100 = -77.22%
Formula
Percentage change = [(151 - 663) / 663] x 100
Subtract the new number by the original number
151 - 663 = -512
-512 ÷ 663 = -0.7722473604826546
-0.7722473604826546 x 100 = -77.22%