-55.12% is the change from 840 to 377
Calculation steps:
[( 377 - 840 ) ÷ 840] x 100 = -55.12%
Formula
Percentage change = [(377 - 840) / 840] x 100
Subtract the new number by the original number
377 - 840 = -463
-463 ÷ 840 = -0.5511904761904762
-0.5511904761904762 x 100 = -55.12%