-15.42% is the change from 817 to 691
Calculation steps:
[( 691 - 817 ) ÷ 817] x 100 = -15.42%
Formula
Percentage change = [(691 - 817) / 817] x 100
Subtract the new number by the original number
691 - 817 = -126
-126 ÷ 817 = -0.15422276621787026
-0.15422276621787026 x 100 = -15.42%