139.49% is the change from 276 to 661
Calculation steps:
[( 661 - 276 ) ÷ 276] x 100 = 139.49%
Formula
Percentage change = [(661 - 276) / 276] x 100
Subtract the new number by the original number
661 - 276 = 385
385 ÷ 276 = 1.394927536231884
1.394927536231884 x 100 = 139.49%