760% is the change from 45 to 387
Calculation steps:
[( 387 - 45 ) ÷ 45] x 100 = 760%
Formula
Percentage change = [(387 - 45) / 45] x 100
Subtract the new number by the original number
387 - 45 = 342
342 ÷ 45 = 7.6
7.6 x 100 = 760%
Example