-15.43% is the change from 538 to 455
Calculation steps:
[( 455 - 538 ) ÷ 538] x 100 = -15.43%
Formula
Percentage change = [(455 - 538) / 538] x 100
Subtract the new number by the original number
455 - 538 = -83
-83 ÷ 538 = -0.15427509293680297
-0.15427509293680297 x 100 = -15.43%