-90.82% is the change from 643 to 59
Calculation steps:
[( 59 - 643 ) ÷ 643] x 100 = -90.82%
Formula
Percentage change = [(59 - 643) / 643] x 100
Subtract the new number by the original number
59 - 643 = -584
-584 ÷ 643 = -0.9082426127527217
-0.9082426127527217 x 100 = -90.82%