-57.99% is the change from 638 to 268
Calculation steps:
[( 268 - 638 ) ÷ 638] x 100 = -57.99%
Formula
Percentage change = [(268 - 638) / 638] x 100
Subtract the new number by the original number
268 - 638 = -370
-370 ÷ 638 = -0.5799373040752351
-0.5799373040752351 x 100 = -57.99%