-29.36% is the change from 637 to 450
Calculation steps:
[( 450 - 637 ) ÷ 637] x 100 = -29.36%
Formula
Percentage change = [(450 - 637) / 637] x 100
Subtract the new number by the original number
450 - 637 = -187
-187 ÷ 637 = -0.29356357927786497
-0.29356357927786497 x 100 = -29.36%