-27.49% is the change from 422 to 306
Calculation steps:
[( 306 - 422 ) ÷ 422] x 100 = -27.49%
Formula
Percentage change = [(306 - 422) / 422] x 100
Subtract the new number by the original number
306 - 422 = -116
-116 ÷ 422 = -0.27488151658767773
-0.27488151658767773 x 100 = -27.49%