-41.88% is the change from 640 to 372
Calculation steps:
[( 372 - 640 ) ÷ 640] x 100 = -41.88%
Formula
Percentage change = [(372 - 640) / 640] x 100
Subtract the new number by the original number
372 - 640 = -268
-268 ÷ 640 = -0.41875
-0.41875 x 100 = -41.88%