-25% is the change from 644 to 483
Calculation steps:
[( 483 - 644 ) ÷ 644] x 100 = -25%
Formula
Percentage change = [(483 - 644) / 644] x 100
Subtract the new number by the original number
483 - 644 = -161
-161 ÷ 644 = -0.25
-0.25 x 100 = -25%
Example