-15.14% is the change from 403 to 342
Calculation steps:
[( 342 - 403 ) ÷ 403] x 100 = -15.14%
Formula
Percentage change = [(342 - 403) / 403] x 100
Subtract the new number by the original number
342 - 403 = -61
-61 ÷ 403 = -0.1513647642679901
-0.1513647642679901 x 100 = -15.14%