-71.04% is the change from 511 to 148
Calculation steps:
[( 148 - 511 ) ÷ 511] x 100 = -71.04%
Formula
Percentage change = [(148 - 511) / 511] x 100
Subtract the new number by the original number
148 - 511 = -363
-363 ÷ 511 = -0.7103718199608611
-0.7103718199608611 x 100 = -71.04%