138.63% is the change from 321 to 766
Calculation steps:
[( 766 - 321 ) ÷ 321] x 100 = 138.63%
Formula
Percentage change = [(766 - 321) / 321] x 100
Subtract the new number by the original number
766 - 321 = 445
445 ÷ 321 = 1.3862928348909658
1.3862928348909658 x 100 = 138.63%