-22.78% is the change from 777 to 600
Calculation steps:
[( 600 - 777 ) ÷ 777] x 100 = -22.78%
Formula
Percentage change = [(600 - 777) / 777] x 100
Subtract the new number by the original number
600 - 777 = -177
-177 ÷ 777 = -0.2277992277992278
-0.2277992277992278 x 100 = -22.78%