81.83% is the change from 545 to 991
Calculation steps:
[( 991 - 545 ) ÷ 545] x 100 = 81.83%
Formula
Percentage change = [(991 - 545) / 545] x 100
Subtract the new number by the original number
991 - 545 = 446
446 ÷ 545 = 0.818348623853211
0.818348623853211 x 100 = 81.83%