2077.78% is the change from 18 to 392
Calculation steps:
[( 392 - 18 ) ÷ 18] x 100 = 2077.78%
Formula
Percentage change = [(392 - 18) / 18] x 100
Subtract the new number by the original number
392 - 18 = 374
374 ÷ 18 = 20.77777777777778
20.77777777777778 x 100 = 2077.78%