-65.66% is the change from 99 to 34
Calculation steps:
[( 34 - 99 ) ÷ 99] x 100 = -65.66%
Formula
Percentage change = [(34 - 99) / 99] x 100
Subtract the new number by the original number
34 - 99 = -65
-65 ÷ 99 = -0.6565656565656566
-0.6565656565656566 x 100 = -65.66%