-7.71% is the change from 493 to 455
Calculation steps:
[( 455 - 493 ) ÷ 493] x 100 = -7.71%
Formula
Percentage change = [(455 - 493) / 493] x 100
Subtract the new number by the original number
455 - 493 = -38
-38 ÷ 493 = -0.07707910750507099
-0.07707910750507099 x 100 = -7.71%