-14.91% is the change from 342 to 291
Calculation steps:
[( 291 - 342 ) ÷ 342] x 100 = -14.91%
Formula
Percentage change = [(291 - 342) / 342] x 100
Subtract the new number by the original number
291 - 342 = -51
-51 ÷ 342 = -0.14912280701754385
-0.14912280701754385 x 100 = -14.91%