-51.33% is the change from 528 to 257
Calculation steps:
[( 257 - 528 ) ÷ 528] x 100 = -51.33%
Formula
Percentage change = [(257 - 528) / 528] x 100
Subtract the new number by the original number
257 - 528 = -271
-271 ÷ 528 = -0.5132575757575758
-0.5132575757575758 x 100 = -51.33%