-18.43% is the change from 841 to 686
Calculation steps:
[( 686 - 841 ) ÷ 841] x 100 = -18.43%
Formula
Percentage change = [(686 - 841) / 841] x 100
Subtract the new number by the original number
686 - 841 = -155
-155 ÷ 841 = -0.18430439952437574
-0.18430439952437574 x 100 = -18.43%