211.72% is the change from 128 to 399
Calculation steps:
[( 399 - 128 ) ÷ 128] x 100 = 211.72%
Formula
Percentage change = [(399 - 128) / 128] x 100
Subtract the new number by the original number
399 - 128 = 271
271 ÷ 128 = 2.1171875
2.1171875 x 100 = 211.72%