-70.78% is the change from 770 to 225
Calculation steps:
[( 225 - 770 ) ÷ 770] x 100 = -70.78%
Formula
Percentage change = [(225 - 770) / 770] x 100
Subtract the new number by the original number
225 - 770 = -545
-545 ÷ 770 = -0.7077922077922078
-0.7077922077922078 x 100 = -70.78%