-69.61% is the change from 306 to 93
Calculation steps:
[( 93 - 306 ) ÷ 306] x 100 = -69.61%
Formula
Percentage change = [(93 - 306) / 306] x 100
Subtract the new number by the original number
93 - 306 = -213
-213 ÷ 306 = -0.696078431372549
-0.696078431372549 x 100 = -69.61%