-60% is the change from 305 to 122
Calculation steps:
[( 122 - 305 ) ÷ 305] x 100 = -60%
Formula
Percentage change = [(122 - 305) / 305] x 100
Subtract the new number by the original number
122 - 305 = -183
-183 ÷ 305 = -0.6
-0.6 x 100 = -60%
Example