-63.6% is the change from 456 to 166
Calculation steps:
[( 166 - 456 ) ÷ 456] x 100 = -63.6%
Formula
Percentage change = [(166 - 456) / 456] x 100
Subtract the new number by the original number
166 - 456 = -290
-290 ÷ 456 = -0.6359649122807017
-0.6359649122807017 x 100 = -63.6%