-30.55% is the change from 491 to 341
Calculation steps:
[( 341 - 491 ) ÷ 491] x 100 = -30.55%
Formula
Percentage change = [(341 - 491) / 491] x 100
Subtract the new number by the original number
341 - 491 = -150
-150 ÷ 491 = -0.3054989816700611
-0.3054989816700611 x 100 = -30.55%