142.11% is the change from 399 to 966
Calculation steps:
[( 966 - 399 ) ÷ 399] x 100 = 142.11%
Formula
Percentage change = [(966 - 399) / 399] x 100
Subtract the new number by the original number
966 - 399 = 567
567 ÷ 399 = 1.4210526315789473
1.4210526315789473 x 100 = 142.11%