-39.77% is the change from 342 to 206
Calculation steps:
[( 206 - 342 ) ÷ 342] x 100 = -39.77%
Formula
Percentage change = [(206 - 342) / 342] x 100
Subtract the new number by the original number
206 - 342 = -136
-136 ÷ 342 = -0.39766081871345027
-0.39766081871345027 x 100 = -39.77%