73.77% is the change from 530 to 921
Calculation steps:
[( 921 - 530 ) ÷ 530] x 100 = 73.77%
Formula
Percentage change = [(921 - 530) / 530] x 100
Subtract the new number by the original number
921 - 530 = 391
391 ÷ 530 = 0.7377358490566037
0.7377358490566037 x 100 = 73.77%