-49.94% is the change from 901 to 451
Calculation steps:
[( 451 - 901 ) ÷ 901] x 100 = -49.94%
Formula
Percentage change = [(451 - 901) / 901] x 100
Subtract the new number by the original number
451 - 901 = -450
-450 ÷ 901 = -0.49944506104328523
-0.49944506104328523 x 100 = -49.94%