-65.71% is the change from 840 to 288
Calculation steps:
[( 288 - 840 ) ÷ 840] x 100 = -65.71%
Formula
Percentage change = [(288 - 840) / 840] x 100
Subtract the new number by the original number
288 - 840 = -552
-552 ÷ 840 = -0.6571428571428571
-0.6571428571428571 x 100 = -65.71%