87.96% is the change from 490 to 921
Calculation steps:
[( 921 - 490 ) ÷ 490] x 100 = 87.96%
Formula
Percentage change = [(921 - 490) / 490] x 100
Subtract the new number by the original number
921 - 490 = 431
431 ÷ 490 = 0.8795918367346939
0.8795918367346939 x 100 = 87.96%