-64.56% is the change from 790 to 280
Calculation steps:
[( 280 - 790 ) ÷ 790] x 100 = -64.56%
Formula
Percentage change = [(280 - 790) / 790] x 100
Subtract the new number by the original number
280 - 790 = -510
-510 ÷ 790 = -0.6455696202531646
-0.6455696202531646 x 100 = -64.56%