-58.71% is the change from 511 to 211
Calculation steps:
[( 211 - 511 ) ÷ 511] x 100 = -58.71%
Formula
Percentage change = [(211 - 511) / 511] x 100
Subtract the new number by the original number
211 - 511 = -300
-300 ÷ 511 = -0.5870841487279843
-0.5870841487279843 x 100 = -58.71%