-75.15% is the change from 491 to 122
Calculation steps:
[( 122 - 491 ) ÷ 491] x 100 = -75.15%
Formula
Percentage change = [(122 - 491) / 491] x 100
Subtract the new number by the original number
122 - 491 = -369
-369 ÷ 491 = -0.7515274949083504
-0.7515274949083504 x 100 = -75.15%