-83.18% is the change from 422 to 71
Calculation steps:
[( 71 - 422 ) ÷ 422] x 100 = -83.18%
Formula
Percentage change = [(71 - 422) / 422] x 100
Subtract the new number by the original number
71 - 422 = -351
-351 ÷ 422 = -0.8317535545023697
-0.8317535545023697 x 100 = -83.18%