-51.85% is the change from 513 to 247
Calculation steps:
[( 247 - 513 ) ÷ 513] x 100 = -51.85%
Formula
Percentage change = [(247 - 513) / 513] x 100
Subtract the new number by the original number
247 - 513 = -266
-266 ÷ 513 = -0.5185185185185185
-0.5185185185185185 x 100 = -51.85%