-0.24% is the change from 841 to 839
Calculation steps:
[( 839 - 841 ) ÷ 841] x 100 = -0.24%
Formula
Percentage change = [(839 - 841) / 841] x 100
Subtract the new number by the original number
839 - 841 = -2
-2 ÷ 841 = -0.0023781212841854932
-0.0023781212841854932 x 100 = -0.24%