-45.83% is the change from 611 to 331
Calculation steps:
[( 331 - 611 ) ÷ 611] x 100 = -45.83%
Formula
Percentage change = [(331 - 611) / 611] x 100
Subtract the new number by the original number
331 - 611 = -280
-280 ÷ 611 = -0.4582651391162029
-0.4582651391162029 x 100 = -45.83%