-50.99% is the change from 912 to 447
Calculation steps:
[( 447 - 912 ) ÷ 912] x 100 = -50.99%
Formula
Percentage change = [(447 - 912) / 912] x 100
Subtract the new number by the original number
447 - 912 = -465
-465 ÷ 912 = -0.5098684210526315
-0.5098684210526315 x 100 = -50.99%