-33.11% is the change from 456 to 305
Calculation steps:
[( 305 - 456 ) ÷ 456] x 100 = -33.11%
Formula
Percentage change = [(305 - 456) / 456] x 100
Subtract the new number by the original number
305 - 456 = -151
-151 ÷ 456 = -0.33114035087719296
-0.33114035087719296 x 100 = -33.11%