-29.15% is the change from 638 to 452
Calculation steps:
[( 452 - 638 ) ÷ 638] x 100 = -29.15%
Formula
Percentage change = [(452 - 638) / 638] x 100
Subtract the new number by the original number
452 - 638 = -186
-186 ÷ 638 = -0.29153605015673983
-0.29153605015673983 x 100 = -29.15%