-7.31% is the change from 643 to 596
Calculation steps:
[( 596 - 643 ) ÷ 643] x 100 = -7.31%
Formula
Percentage change = [(596 - 643) / 643] x 100
Subtract the new number by the original number
596 - 643 = -47
-47 ÷ 643 = -0.07309486780715396
-0.07309486780715396 x 100 = -7.31%