145.81% is the change from 334 to 821
Calculation steps:
[( 821 - 334 ) ÷ 334] x 100 = 145.81%
Formula
Percentage change = [(821 - 334) / 334] x 100
Subtract the new number by the original number
821 - 334 = 487
487 ÷ 334 = 1.4580838323353293
1.4580838323353293 x 100 = 145.81%