261.81% is the change from 144 to 521
Calculation steps:
[( 521 - 144 ) ÷ 144] x 100 = 261.81%
Formula
Percentage change = [(521 - 144) / 144] x 100
Subtract the new number by the original number
521 - 144 = 377
377 ÷ 144 = 2.6180555555555554
2.6180555555555554 x 100 = 261.81%