-83.95% is the change from 243 to 39
Calculation steps:
[( 39 - 243 ) ÷ 243] x 100 = -83.95%
Formula
Percentage change = [(39 - 243) / 243] x 100
Subtract the new number by the original number
39 - 243 = -204
-204 ÷ 243 = -0.8395061728395061
-0.8395061728395061 x 100 = -83.95%