-86.01% is the change from 243 to 34
Calculation steps:
[( 34 - 243 ) ÷ 243] x 100 = -86.01%
Formula
Percentage change = [(34 - 243) / 243] x 100
Subtract the new number by the original number
34 - 243 = -209
-209 ÷ 243 = -0.8600823045267489
-0.8600823045267489 x 100 = -86.01%