-6.12% is the change from 817 to 767
Calculation steps:
[( 767 - 817 ) ÷ 817] x 100 = -6.12%
Formula
Percentage change = [(767 - 817) / 817] x 100
Subtract the new number by the original number
767 - 817 = -50
-50 ÷ 817 = -0.06119951040391677
-0.06119951040391677 x 100 = -6.12%