54.52% is the change from 398 to 615
Calculation steps:
[( 615 - 398 ) ÷ 398] x 100 = 54.52%
Formula
Percentage change = [(615 - 398) / 398] x 100
Subtract the new number by the original number
615 - 398 = 217
217 ÷ 398 = 0.5452261306532663
0.5452261306532663 x 100 = 54.52%