-69.65% is the change from 491 to 149
Calculation steps:
[( 149 - 491 ) ÷ 491] x 100 = -69.65%
Formula
Percentage change = [(149 - 491) / 491] x 100
Subtract the new number by the original number
149 - 491 = -342
-342 ÷ 491 = -0.6965376782077393
-0.6965376782077393 x 100 = -69.65%