-49.4% is the change from 921 to 466
Calculation steps:
[( 466 - 921 ) ÷ 921] x 100 = -49.4%
Formula
Percentage change = [(466 - 921) / 921] x 100
Subtract the new number by the original number
466 - 921 = -455
-455 ÷ 921 = -0.494028230184582
-0.494028230184582 x 100 = -49.4%