-37.58% is the change from 306 to 191
Calculation steps:
[( 191 - 306 ) ÷ 306] x 100 = -37.58%
Formula
Percentage change = [(191 - 306) / 306] x 100
Subtract the new number by the original number
191 - 306 = -115
-115 ÷ 306 = -0.3758169934640523
-0.3758169934640523 x 100 = -37.58%