-40% is the change from 655 to 393
Calculation steps:
[( 393 - 655 ) ÷ 655] x 100 = -40%
Formula
Percentage change = [(393 - 655) / 655] x 100
Subtract the new number by the original number
393 - 655 = -262
-262 ÷ 655 = -0.4
-0.4 x 100 = -40%
Example