-77.39% is the change from 637 to 144
Calculation steps:
[( 144 - 637 ) ÷ 637] x 100 = -77.39%
Formula
Percentage change = [(144 - 637) / 637] x 100
Subtract the new number by the original number
144 - 637 = -493
-493 ÷ 637 = -0.7739403453689168
-0.7739403453689168 x 100 = -77.39%