-63.4% is the change from 765 to 280
Calculation steps:
[( 280 - 765 ) ÷ 765] x 100 = -63.4%
Formula
Percentage change = [(280 - 765) / 765] x 100
Subtract the new number by the original number
280 - 765 = -485
-485 ÷ 765 = -0.6339869281045751
-0.6339869281045751 x 100 = -63.4%