-9.33% is the change from 643 to 583
Calculation steps:
[( 583 - 643 ) ÷ 643] x 100 = -9.33%
Formula
Percentage change = [(583 - 643) / 643] x 100
Subtract the new number by the original number
583 - 643 = -60
-60 ÷ 643 = -0.09331259720062209
-0.09331259720062209 x 100 = -9.33%