-18.17% is the change from 556 to 455
Calculation steps:
[( 455 - 556 ) ÷ 556] x 100 = -18.17%
Formula
Percentage change = [(455 - 556) / 556] x 100
Subtract the new number by the original number
455 - 556 = -101
-101 ÷ 556 = -0.18165467625899281
-0.18165467625899281 x 100 = -18.17%