298.97% is the change from 97 to 387
Calculation steps:
[( 387 - 97 ) ÷ 97] x 100 = 298.97%
Formula
Percentage change = [(387 - 97) / 97] x 100
Subtract the new number by the original number
387 - 97 = 290
290 ÷ 97 = 2.9896907216494846
2.9896907216494846 x 100 = 298.97%