-23.19% is the change from 841 to 646
Calculation steps:
[( 646 - 841 ) ÷ 841] x 100 = -23.19%
Formula
Percentage change = [(646 - 841) / 841] x 100
Subtract the new number by the original number
646 - 841 = -195
-195 ÷ 841 = -0.2318668252080856
-0.2318668252080856 x 100 = -23.19%