99.1% is the change from 442 to 880
Calculation steps:
[( 880 - 442 ) ÷ 442] x 100 = 99.1%
Formula
Percentage change = [(880 - 442) / 442] x 100
Subtract the new number by the original number
880 - 442 = 438
438 ÷ 442 = 0.9909502262443439
0.9909502262443439 x 100 = 99.1%