-76.62% is the change from 817 to 191
Calculation steps:
[( 191 - 817 ) ÷ 817] x 100 = -76.62%
Formula
Percentage change = [(191 - 817) / 817] x 100
Subtract the new number by the original number
191 - 817 = -626
-626 ÷ 817 = -0.7662178702570379
-0.7662178702570379 x 100 = -76.62%