-91.94% is the change from 645 to 52
Calculation steps:
[( 52 - 645 ) ÷ 645] x 100 = -91.94%
Formula
Percentage change = [(52 - 645) / 645] x 100
Subtract the new number by the original number
52 - 645 = -593
-593 ÷ 645 = -0.9193798449612403
-0.9193798449612403 x 100 = -91.94%