-47.37% is the change from 513 to 270
Calculation steps:
[( 270 - 513 ) ÷ 513] x 100 = -47.37%
Formula
Percentage change = [(270 - 513) / 513] x 100
Subtract the new number by the original number
270 - 513 = -243
-243 ÷ 513 = -0.47368421052631576
-0.47368421052631576 x 100 = -47.37%