-65.6% is the change from 840 to 289
Calculation steps:
[( 289 - 840 ) ÷ 840] x 100 = -65.6%
Formula
Percentage change = [(289 - 840) / 840] x 100
Subtract the new number by the original number
289 - 840 = -551
-551 ÷ 840 = -0.655952380952381
-0.655952380952381 x 100 = -65.6%