-60.28% is the change from 778 to 309
Calculation steps:
[( 309 - 778 ) ÷ 778] x 100 = -60.28%
Formula
Percentage change = [(309 - 778) / 778] x 100
Subtract the new number by the original number
309 - 778 = -469
-469 ÷ 778 = -0.602827763496144
-0.602827763496144 x 100 = -60.28%