-50.29% is the change from 849 to 422
Calculation steps:
[( 422 - 849 ) ÷ 849] x 100 = -50.29%
Formula
Percentage change = [(422 - 849) / 849] x 100
Subtract the new number by the original number
422 - 849 = -427
-427 ÷ 849 = -0.502944640753828
-0.502944640753828 x 100 = -50.29%