-32.6% is the change from 454 to 306
Calculation steps:
[( 306 - 454 ) ÷ 454] x 100 = -32.6%
Formula
Percentage change = [(306 - 454) / 454] x 100
Subtract the new number by the original number
306 - 454 = -148
-148 ÷ 454 = -0.32599118942731276
-0.32599118942731276 x 100 = -32.6%