-24.43% is the change from 663 to 501
Calculation steps:
[( 501 - 663 ) ÷ 663] x 100 = -24.43%
Formula
Percentage change = [(501 - 663) / 663] x 100
Subtract the new number by the original number
501 - 663 = -162
-162 ÷ 663 = -0.24434389140271492
-0.24434389140271492 x 100 = -24.43%