-73.51% is the change from 770 to 204
Calculation steps:
[( 204 - 770 ) ÷ 770] x 100 = -73.51%
Formula
Percentage change = [(204 - 770) / 770] x 100
Subtract the new number by the original number
204 - 770 = -566
-566 ÷ 770 = -0.7350649350649351
-0.7350649350649351 x 100 = -73.51%