-50.11% is the change from 902 to 450
Calculation steps:
[( 450 - 902 ) ÷ 902] x 100 = -50.11%
Formula
Percentage change = [(450 - 902) / 902] x 100
Subtract the new number by the original number
450 - 902 = -452
-452 ÷ 902 = -0.5011086474501109
-0.5011086474501109 x 100 = -50.11%