-3.64% is the change from 797 to 768
Calculation steps:
[( 768 - 797 ) ÷ 797] x 100 = -3.64%
Formula
Percentage change = [(768 - 797) / 797] x 100
Subtract the new number by the original number
768 - 797 = -29
-29 ÷ 797 = -0.03638644918444166
-0.03638644918444166 x 100 = -3.64%