-6% is the change from 817 to 768
Calculation steps:
[( 768 - 817 ) ÷ 817] x 100 = -6%
Formula
Percentage change = [(768 - 817) / 817] x 100
Subtract the new number by the original number
768 - 817 = -49
-49 ÷ 817 = -0.05997552019583843
-0.05997552019583843 x 100 = -6%