-37.22% is the change from 309 to 194
Calculation steps:
[( 194 - 309 ) ÷ 309] x 100 = -37.22%
Formula
Percentage change = [(194 - 309) / 309] x 100
Subtract the new number by the original number
194 - 309 = -115
-115 ÷ 309 = -0.37216828478964403
-0.37216828478964403 x 100 = -37.22%