64% is the change from 375 to 615
Calculation steps:
[( 615 - 375 ) ÷ 375] x 100 = 64%
Formula
Percentage change = [(615 - 375) / 375] x 100
Subtract the new number by the original number
615 - 375 = 240
240 ÷ 375 = 0.64
0.64 x 100 = 64%
Example