-49.94% is the change from 843 to 422
Calculation steps:
[( 422 - 843 ) ÷ 843] x 100 = -49.94%
Formula
Percentage change = [(422 - 843) / 843] x 100
Subtract the new number by the original number
422 - 843 = -421
-421 ÷ 843 = -0.49940688018979834
-0.49940688018979834 x 100 = -49.94%