-91.8% is the change from 646 to 53
Calculation steps:
[( 53 - 646 ) ÷ 646] x 100 = -91.8%
Formula
Percentage change = [(53 - 646) / 646] x 100
Subtract the new number by the original number
53 - 646 = -593
-593 ÷ 646 = -0.9179566563467493
-0.9179566563467493 x 100 = -91.8%