-67.97% is the change from 306 to 98
Calculation steps:
[( 98 - 306 ) ÷ 306] x 100 = -67.97%
Formula
Percentage change = [(98 - 306) / 306] x 100
Subtract the new number by the original number
98 - 306 = -208
-208 ÷ 306 = -0.6797385620915033
-0.6797385620915033 x 100 = -67.97%