-86.73% is the change from 422 to 56
Calculation steps:
[( 56 - 422 ) ÷ 422] x 100 = -86.73%
Formula
Percentage change = [(56 - 422) / 422] x 100
Subtract the new number by the original number
56 - 422 = -366
-366 ÷ 422 = -0.8672985781990521
-0.8672985781990521 x 100 = -86.73%