77.1% is the change from 489 to 866
Calculation steps:
[( 866 - 489 ) ÷ 489] x 100 = 77.1%
Formula
Percentage change = [(866 - 489) / 489] x 100
Subtract the new number by the original number
866 - 489 = 377
377 ÷ 489 = 0.7709611451942741
0.7709611451942741 x 100 = 77.1%