-27.62% is the change from 840 to 608
Calculation steps:
[( 608 - 840 ) ÷ 840] x 100 = -27.62%
Formula
Percentage change = [(608 - 840) / 840] x 100
Subtract the new number by the original number
608 - 840 = -232
-232 ÷ 840 = -0.2761904761904762
-0.2761904761904762 x 100 = -27.62%