-22.65% is the change from 649 to 502
Calculation steps:
[( 502 - 649 ) ÷ 649] x 100 = -22.65%
Formula
Percentage change = [(502 - 649) / 649] x 100
Subtract the new number by the original number
502 - 649 = -147
-147 ÷ 649 = -0.22650231124807396
-0.22650231124807396 x 100 = -22.65%