254.42% is the change from 147 to 521
Calculation steps:
[( 521 - 147 ) ÷ 147] x 100 = 254.42%
Formula
Percentage change = [(521 - 147) / 147] x 100
Subtract the new number by the original number
521 - 147 = 374
374 ÷ 147 = 2.54421768707483
2.54421768707483 x 100 = 254.42%