-64.01% is the change from 778 to 280
Calculation steps:
[( 280 - 778 ) ÷ 778] x 100 = -64.01%
Formula
Percentage change = [(280 - 778) / 778] x 100
Subtract the new number by the original number
280 - 778 = -498
-498 ÷ 778 = -0.6401028277634961
-0.6401028277634961 x 100 = -64.01%