-69.08% is the change from 511 to 158
Calculation steps:
[( 158 - 511 ) ÷ 511] x 100 = -69.08%
Formula
Percentage change = [(158 - 511) / 511] x 100
Subtract the new number by the original number
158 - 511 = -353
-353 ÷ 511 = -0.6908023483365949
-0.6908023483365949 x 100 = -69.08%