380% is the change from 40 to 192
Calculation steps:
[( 192 - 40 ) ÷ 40] x 100 = 380%
Formula
Percentage change = [(192 - 40) / 40] x 100
Subtract the new number by the original number
192 - 40 = 152
152 ÷ 40 = 3.8
3.8 x 100 = 380%
Example