-60.12% is the change from 820 to 327
Calculation steps:
[( 327 - 820 ) ÷ 820] x 100 = -60.12%
Formula
Percentage change = [(327 - 820) / 820] x 100
Subtract the new number by the original number
327 - 820 = -493
-493 ÷ 820 = -0.6012195121951219
-0.6012195121951219 x 100 = -60.12%