-91.02% is the change from 646 to 58
Calculation steps:
[( 58 - 646 ) ÷ 646] x 100 = -91.02%
Formula
Percentage change = [(58 - 646) / 646] x 100
Subtract the new number by the original number
58 - 646 = -588
-588 ÷ 646 = -0.9102167182662538
-0.9102167182662538 x 100 = -91.02%