-49.77% is the change from 659 to 331
Calculation steps:
[( 331 - 659 ) ÷ 659] x 100 = -49.77%
Formula
Percentage change = [(331 - 659) / 659] x 100
Subtract the new number by the original number
331 - 659 = -328
-328 ÷ 659 = -0.4977238239757208
-0.4977238239757208 x 100 = -49.77%