-66.78% is the change from 298 to 99
Calculation steps:
[( 99 - 298 ) ÷ 298] x 100 = -66.78%
Formula
Percentage change = [(99 - 298) / 298] x 100
Subtract the new number by the original number
99 - 298 = -199
-199 ÷ 298 = -0.6677852348993288
-0.6677852348993288 x 100 = -66.78%