208.64% is the change from 81 to 250
Calculation steps:
[( 250 - 81 ) ÷ 81] x 100 = 208.64%
Formula
Percentage change = [(250 - 81) / 81] x 100
Subtract the new number by the original number
250 - 81 = 169
169 ÷ 81 = 2.0864197530864197
2.0864197530864197 x 100 = 208.64%