-58.69% is the change from 777 to 321
Calculation steps:
[( 321 - 777 ) ÷ 777] x 100 = -58.69%
Formula
Percentage change = [(321 - 777) / 777] x 100
Subtract the new number by the original number
321 - 777 = -456
-456 ÷ 777 = -0.5868725868725869
-0.5868725868725869 x 100 = -58.69%