-29.22% is the change from 770 to 545
Calculation steps:
[( 545 - 770 ) ÷ 770] x 100 = -29.22%
Formula
Percentage change = [(545 - 770) / 770] x 100
Subtract the new number by the original number
545 - 770 = -225
-225 ÷ 770 = -0.2922077922077922
-0.2922077922077922 x 100 = -29.22%