-49.5% is the change from 901 to 455
Calculation steps:
[( 455 - 901 ) ÷ 901] x 100 = -49.5%
Formula
Percentage change = [(455 - 901) / 901] x 100
Subtract the new number by the original number
455 - 901 = -446
-446 ÷ 901 = -0.49500554938956715
-0.49500554938956715 x 100 = -49.5%