-83.41% is the change from 428 to 71
Calculation steps:
[( 71 - 428 ) ÷ 428] x 100 = -83.41%
Formula
Percentage change = [(71 - 428) / 428] x 100
Subtract the new number by the original number
71 - 428 = -357
-357 ÷ 428 = -0.8341121495327103
-0.8341121495327103 x 100 = -83.41%