-29.55% is the change from 643 to 453
Calculation steps:
[( 453 - 643 ) ÷ 643] x 100 = -29.55%
Formula
Percentage change = [(453 - 643) / 643] x 100
Subtract the new number by the original number
453 - 643 = -190
-190 ÷ 643 = -0.2954898911353033
-0.2954898911353033 x 100 = -29.55%