-66.75% is the change from 406 to 135
Calculation steps:
[( 135 - 406 ) ÷ 406] x 100 = -66.75%
Formula
Percentage change = [(135 - 406) / 406] x 100
Subtract the new number by the original number
135 - 406 = -271
-271 ÷ 406 = -0.6674876847290641
-0.6674876847290641 x 100 = -66.75%