-24.85% is the change from 825 to 620
Calculation steps:
[( 620 - 825 ) ÷ 825] x 100 = -24.85%
Formula
Percentage change = [(620 - 825) / 825] x 100
Subtract the new number by the original number
620 - 825 = -205
-205 ÷ 825 = -0.24848484848484848
-0.24848484848484848 x 100 = -24.85%