-61.07% is the change from 840 to 327
Calculation steps:
[( 327 - 840 ) ÷ 840] x 100 = -61.07%
Formula
Percentage change = [(327 - 840) / 840] x 100
Subtract the new number by the original number
327 - 840 = -513
-513 ÷ 840 = -0.6107142857142858
-0.6107142857142858 x 100 = -61.07%