-10.12% is the change from 642 to 577
Calculation steps:
[( 577 - 642 ) ÷ 642] x 100 = -10.12%
Formula
Percentage change = [(577 - 642) / 642] x 100
Subtract the new number by the original number
577 - 642 = -65
-65 ÷ 642 = -0.10124610591900311
-0.10124610591900311 x 100 = -10.12%