-32.68% is the change from 306 to 206
Calculation steps:
[( 206 - 306 ) ÷ 306] x 100 = -32.68%
Formula
Percentage change = [(206 - 306) / 306] x 100
Subtract the new number by the original number
206 - 306 = -100
-100 ÷ 306 = -0.32679738562091504
-0.32679738562091504 x 100 = -32.68%