-50% is the change from 904 to 452
Calculation steps:
[( 452 - 904 ) ÷ 904] x 100 = -50%
Formula
Percentage change = [(452 - 904) / 904] x 100
Subtract the new number by the original number
452 - 904 = -452
-452 ÷ 904 = -0.5
-0.5 x 100 = -50%
Example