-15.01% is the change from 753 to 640
Calculation steps:
[( 640 - 753 ) ÷ 753] x 100 = -15.01%
Formula
Percentage change = [(640 - 753) / 753] x 100
Subtract the new number by the original number
640 - 753 = -113
-113 ÷ 753 = -0.150066401062417
-0.150066401062417 x 100 = -15.01%