-2.78% is the change from 792 to 770
Calculation steps:
[( 770 - 792 ) ÷ 792] x 100 = -2.78%
Formula
Percentage change = [(770 - 792) / 792] x 100
Subtract the new number by the original number
770 - 792 = -22
-22 ÷ 792 = -0.027777777777777776
-0.027777777777777776 x 100 = -2.78%