-99.88% is the change from 841 to 1
Calculation steps:
[( 1 - 841 ) ÷ 841] x 100 = -99.88%
Formula
Percentage change = [(1 - 841) / 841] x 100
Subtract the new number by the original number
1 - 841 = -840
-840 ÷ 841 = -0.9988109393579072
-0.9988109393579072 x 100 = -99.88%