-1.92% is the change from 783 to 768
Calculation steps:
[( 768 - 783 ) ÷ 783] x 100 = -1.92%
Formula
Percentage change = [(768 - 783) / 783] x 100
Subtract the new number by the original number
768 - 783 = -15
-15 ÷ 783 = -0.019157088122605363
-0.019157088122605363 x 100 = -1.92%