-91.83% is the change from 624 to 51
Calculation steps:
[( 51 - 624 ) ÷ 624] x 100 = -91.83%
Formula
Percentage change = [(51 - 624) / 624] x 100
Subtract the new number by the original number
51 - 624 = -573
-573 ÷ 624 = -0.9182692307692307
-0.9182692307692307 x 100 = -91.83%