-26.31% is the change from 840 to 619
Calculation steps:
[( 619 - 840 ) ÷ 840] x 100 = -26.31%
Formula
Percentage change = [(619 - 840) / 840] x 100
Subtract the new number by the original number
619 - 840 = -221
-221 ÷ 840 = -0.2630952380952381
-0.2630952380952381 x 100 = -26.31%