338.78% is the change from 49 to 215
Calculation steps:
[( 215 - 49 ) ÷ 49] x 100 = 338.78%
Formula
Percentage change = [(215 - 49) / 49] x 100
Subtract the new number by the original number
215 - 49 = 166
166 ÷ 49 = 3.3877551020408165
3.3877551020408165 x 100 = 338.78%