-26.28% is the change from 841 to 620
Calculation steps:
[( 620 - 841 ) ÷ 841] x 100 = -26.28%
Formula
Percentage change = [(620 - 841) / 841] x 100
Subtract the new number by the original number
620 - 841 = -221
-221 ÷ 841 = -0.262782401902497
-0.262782401902497 x 100 = -26.28%