-49.94% is the change from 841 to 421
Calculation steps:
[( 421 - 841 ) ÷ 841] x 100 = -49.94%
Formula
Percentage change = [(421 - 841) / 841] x 100
Subtract the new number by the original number
421 - 841 = -420
-420 ÷ 841 = -0.4994054696789536
-0.4994054696789536 x 100 = -49.94%