-76.13% is the change from 511 to 122
Calculation steps:
[( 122 - 511 ) ÷ 511] x 100 = -76.13%
Formula
Percentage change = [(122 - 511) / 511] x 100
Subtract the new number by the original number
122 - 511 = -389
-389 ÷ 511 = -0.761252446183953
-0.761252446183953 x 100 = -76.13%