79.53% is the change from 513 to 921
Calculation steps:
[( 921 - 513 ) ÷ 513] x 100 = 79.53%
Formula
Percentage change = [(921 - 513) / 513] x 100
Subtract the new number by the original number
921 - 513 = 408
408 ÷ 513 = 0.7953216374269005
0.7953216374269005 x 100 = 79.53%