122.62% is the change from 389 to 866
Calculation steps:
[( 866 - 389 ) ÷ 389] x 100 = 122.62%
Formula
Percentage change = [(866 - 389) / 389] x 100
Subtract the new number by the original number
866 - 389 = 477
477 ÷ 389 = 1.2262210796915167
1.2262210796915167 x 100 = 122.62%