-75% is the change from 284 to 71
Calculation steps:
[( 71 - 284 ) ÷ 284] x 100 = -75%
Formula
Percentage change = [(71 - 284) / 284] x 100
Subtract the new number by the original number
71 - 284 = -213
-213 ÷ 284 = -0.75
-0.75 x 100 = -75%
Example