-39.34% is the change from 455 to 276
Calculation steps:
[( 276 - 455 ) ÷ 455] x 100 = -39.34%
Formula
Percentage change = [(276 - 455) / 455] x 100
Subtract the new number by the original number
276 - 455 = -179
-179 ÷ 455 = -0.3934065934065934
-0.3934065934065934 x 100 = -39.34%