-49.5% is the change from 903 to 456
Calculation steps:
[( 456 - 903 ) ÷ 903] x 100 = -49.5%
Formula
Percentage change = [(456 - 903) / 903] x 100
Subtract the new number by the original number
456 - 903 = -447
-447 ÷ 903 = -0.4950166112956811
-0.4950166112956811 x 100 = -49.5%