-34.05% is the change from 840 to 554
Calculation steps:
[( 554 - 840 ) ÷ 840] x 100 = -34.05%
Formula
Percentage change = [(554 - 840) / 840] x 100
Subtract the new number by the original number
554 - 840 = -286
-286 ÷ 840 = -0.3404761904761905
-0.3404761904761905 x 100 = -34.05%