-51.92% is the change from 522 to 251
Calculation steps:
[( 251 - 522 ) ÷ 522] x 100 = -51.92%
Formula
Percentage change = [(251 - 522) / 522] x 100
Subtract the new number by the original number
251 - 522 = -271
-271 ÷ 522 = -0.5191570881226054
-0.5191570881226054 x 100 = -51.92%