-37.47% is the change from 491 to 307
Calculation steps:
[( 307 - 491 ) ÷ 491] x 100 = -37.47%
Formula
Percentage change = [(307 - 491) / 491] x 100
Subtract the new number by the original number
307 - 491 = -184
-184 ÷ 491 = -0.37474541751527496
-0.37474541751527496 x 100 = -37.47%