77.78% is the change from 513 to 912
Calculation steps:
[( 912 - 513 ) ÷ 513] x 100 = 77.78%
Formula
Percentage change = [(912 - 513) / 513] x 100
Subtract the new number by the original number
912 - 513 = 399
399 ÷ 513 = 0.7777777777777778
0.7777777777777778 x 100 = 77.78%