-78.35% is the change from 328 to 71
Calculation steps:
[( 71 - 328 ) ÷ 328] x 100 = -78.35%
Formula
Percentage change = [(71 - 328) / 328] x 100
Subtract the new number by the original number
71 - 328 = -257
-257 ÷ 328 = -0.7835365853658537
-0.7835365853658537 x 100 = -78.35%