-24.8% is the change from 637 to 479
Calculation steps:
[( 479 - 637 ) ÷ 637] x 100 = -24.8%
Formula
Percentage change = [(479 - 637) / 637] x 100
Subtract the new number by the original number
479 - 637 = -158
-158 ÷ 637 = -0.24803767660910517
-0.24803767660910517 x 100 = -24.8%