328.51% is the change from 228 to 977
Calculation steps:
[( 977 - 228 ) ÷ 228] x 100 = 328.51%
Formula
Percentage change = [(977 - 228) / 228] x 100
Subtract the new number by the original number
977 - 228 = 749
749 ÷ 228 = 3.2850877192982457
3.2850877192982457 x 100 = 328.51%