-89.89% is the change from 841 to 85
Calculation steps:
[( 85 - 841 ) ÷ 841] x 100 = -89.89%
Formula
Percentage change = [(85 - 841) / 841] x 100
Subtract the new number by the original number
85 - 841 = -756
-756 ÷ 841 = -0.8989298454221165
-0.8989298454221165 x 100 = -89.89%