-99.68% is the change from 625 to 2
Calculation steps:
[( 2 - 625 ) ÷ 625] x 100 = -99.68%
Formula
Percentage change = [(2 - 625) / 625] x 100
Subtract the new number by the original number
2 - 625 = -623
-623 ÷ 625 = -0.9968
-0.9968 x 100 = -99.68%
Example