-27% is the change from 700 to 511
Calculation steps:
[( 511 - 700 ) ÷ 700] x 100 = -27%
Formula
Percentage change = [(511 - 700) / 700] x 100
Subtract the new number by the original number
511 - 700 = -189
-189 ÷ 700 = -0.27
-0.27 x 100 = -27%
Example