-66.37% is the change from 342 to 115
Calculation steps:
[( 115 - 342 ) ÷ 342] x 100 = -66.37%
Formula
Percentage change = [(115 - 342) / 342] x 100
Subtract the new number by the original number
115 - 342 = -227
-227 ÷ 342 = -0.6637426900584795
-0.6637426900584795 x 100 = -66.37%