-25.09% is the change from 841 to 630
Calculation steps:
[( 630 - 841 ) ÷ 841] x 100 = -25.09%
Formula
Percentage change = [(630 - 841) / 841] x 100
Subtract the new number by the original number
630 - 841 = -211
-211 ÷ 841 = -0.25089179548156954
-0.25089179548156954 x 100 = -25.09%