-90.67% is the change from 643 to 60
Calculation steps:
[( 60 - 643 ) ÷ 643] x 100 = -90.67%
Formula
Percentage change = [(60 - 643) / 643] x 100
Subtract the new number by the original number
60 - 643 = -583
-583 ÷ 643 = -0.9066874027993779
-0.9066874027993779 x 100 = -90.67%