281.82% is the change from 99 to 378
Calculation steps:
[( 378 - 99 ) ÷ 99] x 100 = 281.82%
Formula
Percentage change = [(378 - 99) / 99] x 100
Subtract the new number by the original number
378 - 99 = 279
279 ÷ 99 = 2.8181818181818183
2.8181818181818183 x 100 = 281.82%